#include <cstdio>
#include <cstring>

char str[1005];

int main()
{
    int len;
    scanf("%s", str);
    len = strlen(str);

    for(int i = 0; i < len; i++) {
        if('z' == str[i]) {
            str[i] = 'a';
        } else if('Z' == str[i]) {
            str[i] = 'A';
        } else if((str[i] >= 'a' && str[i] <= 'z') || (str[i] >= 'A' && str[i] <= 'Z')){
            str[i]++;
        }
    }

    printf("%s\n", str);
    return 0;
}